What is USP <797> and Why Does It Matter for Compounding Pharmacies?
Published by LabCertTech LLC | Houston, Texas
If you operate or manage a compounding pharmacy, you’ve likely heard of USP <797>. But what exactly does it require, and why is routine certification so critical to staying compliant? This post breaks it down in plain language.
What is USP <797>?
USP <797> is a set of standards published by the United States Pharmacopeia (USP) that establishes requirements for the preparation of sterile compounded preparations. It applies to any facility that compounds sterile medications, including:
- Compounding pharmacies
- Hospital pharmacy departments
- Ambulatory care facilities
- Physician office practices
The standard covers everything from facility design and air quality to personnel training, cleaning procedures, and environmental monitoring. Its primary goal is to protect patients from harm caused by contaminated or improperly prepared sterile medications.
💊 Key fact: USP <797> was significantly revised in 2023, introducing stricter requirements for cleanroom design, environmental monitoring, and beyond-use dating (BUD). Facilities must ensure their certification practices reflect the updated standard.
Why Does Air Quality Matter in Compounding?
Sterile compounding requires an environment where airborne particles and microbial contamination are kept to an absolute minimum. Even microscopic contaminants can cause serious patient harm when introduced into injectable medications or ophthalmic preparations.
USP <797> requires compounding facilities to maintain specific ISO classified environments depending on the type of compounding being performed:
- ISO 5 — required at the point of compounding (inside the primary engineering control)
- ISO 7 — required in the buffer room where compounding occurs
- ISO 8 — required in the ante-room adjacent to the buffer room
What Needs to Be Certified?
Under USP <797>, several critical components of your compounding environment must be certified by a qualified certification professional:
- Cleanrooms — particle count testing, airflow velocity, air changes per hour (ACH), and room pressurization
- Biological Safety Cabinets (BSCs) — HEPA filter integrity, inflow and downflow velocities
- Compounding Aseptic Isolators (CAIs) and Compounding Aseptic Containment Isolators (CACIs) — containment and airflow verification
- HEPA filters — integrity testing to ensure no leaks or bypass
- Differential pressure — verification that buffer rooms maintain positive or negative pressure as required
📋 Certification frequency: USP <797> requires certification of cleanrooms and primary engineering controls at least every 6 months, or whenever the facility undergoes construction, relocation, or major maintenance.
What Happens If You’re Not Compliant?
Failure to maintain USP <797> compliance can have serious consequences for your pharmacy and your patients:
- State board of pharmacy citations and fines
- Suspension or revocation of compounding license
- FDA warning letters or facility shutdowns
- Patient harm from contaminated preparations
- Liability exposure and legal action
Staying current with your certification schedule is not just a regulatory requirement — it’s a fundamental patient safety obligation.
How LabCertTech Can Help
LabCertTech LLC provides comprehensive USP <797> certification services for compounding pharmacies in Houston, Texas and surrounding areas. Our team performs all required testing including particle count testing, HEPA filter integrity, airflow verification, differential pressure, and environmental monitoring support.
We provide detailed certification reports that document your facility’s compliance and are ready for state board inspections.
Ready to Schedule Your USP <797> Certification?
Contact LabCertTech today — Houston’s veteran owned cleanroom certification company.
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